Ferrari 308 GTS/GTB/GT4

Brake fluid capacity & service interval

Ferrari 308 GTS/GTB/GT4 brake fluid capacity is 0,58 liter. Service intervals include checking at 5000 km and changing at 10000 km or 6 months. The data covers 3 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
308 GTB (1975-1984)
  • Use: Normal
  • Capacity 0,58 liter
  • Check 5000 km
  • Change 10000 km/ 6 months
308 GTS (1975-1984)
  • Use: Normal
  • Capacity 0,58 liter
  • Check 5000 km
  • Change 10000 km/ 6 months
308 GT4 (1974-1980)
  • Use: Normal
  • Capacity 0,58 liter
  • Check 5000 km
  • Change 10000 km/ 6 months

Additional Notes

  • The Ferrari 308 GT4, GTB, and GTS all share an identical hydraulic brake system capacity of 0.58 liter, indicating a relatively compact fluid reservoir consistent with the sports car architecture of the era.
  • Across all three variants, the brake fluid check interval is set at every 5,000 km under normal use conditions, placing the inspection frequency at roughly half the full change interval.
  • The change interval for brake fluid across the 308 GT4, GTB, and GTS is specified at 10,000 km or every 6 months, whichever comes first. The dual-trigger format reflects the time-sensitive degradation properties of brake fluid, which absorbs moisture regardless of mileage accumulation.
  • The 308 GT4 carries a production span of 1974-1980 within these specifications, while both the 308 GTB and 308 GTS share a span of 1975-1984, meaning the GT4 has a shorter covered range than the other two variants.
  • The 6-month time-based change threshold applies alongside the 10,000 km mileage trigger for all three models, meaning a low-mileage vehicle driven infrequently would still require fluid replacement on the calendar schedule rather than the distance schedule.

Other Systems